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五年级-数学（北京版）-包装中的数学问题

视频地址：https://video.cache.bdschool.cn/vd/7d97674d720f414bd40a718c35cf01d8.mp4
附件：0515五年级数学（北京版）-包装中的数学问题-1教案.docx
附件：0515五年级数学（北京版）-包装中的数学问题-2课件ppt.pdf
附件：0515五年级数学（北京版）-包装中的数学问题-3学习任务单.docx

18 views Jul 15, 2021

五年级-数学（北京版）-分数的基本性质（二）五年级-数学（北京版）-分数加、减法（二）

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